“None of us are very happy when we hear these things,” convention center executive director Peggy Daidakis told NBC News. “We’re not trying to hide anything. If there is something, we’ll take the corrective measures.”
About 400 of the summit’s 1,500 guests have not reported about their health, so the number of people who became ill after the event may be even higher.
“We are working on evaluating possible exposures and doing testing at the Maryland state public health laboratory to attempt to identify an agent,” officials said in a letter to attendees.
Convention guests included staff from the Food and Drug Administration and the Centers for Disease Control and Prevention, as well as from companies like McDonald’s, Chiquita and Tyson.
Notable deaths of 2014 [PHOTOS]